Abstract: A method of configuring a set of active cells among neighboring cells to reduce latency and interruption for inter-cell mobility is proposed. The set of active cells is an active set of cells among which UE can do fast cell switching. The set of active cells is configured by the network based on UE measurement report or network deployment information. UE maintains the configuration and can perform pre-synchronization to the configured active cells in downlink (DL) only or in both DL and uplink (UL). UE maintains the DL/UL synchronization with the active cells, and applies configuration once UE is indicated to switch to an active cell as the target cell. Because UE maintains the configuration and DL/UL timing of the target cell before receiving the cell-switch command, the mobility latency and interruption time for inter-cell mobility is reduced.

Abstract: Apparatus and methods are provided for RRM measurement in the NR network. In one novel aspect, the RRM measurement is configured with one measurement gap for SS block and CSI-RS. In one embodiment, an extended MGL (eMGL) is configured such that the SS block and CSI-RS is measurement within one measurement gap. In another embodiment, the shorter MGL (sMGL) that is shorter than the standard MGL is configured. In another novel aspect, the CSI-RS is allocated adjacent to the SS blocks such that one measurement gap is configured for both the SS block and CSI-RS measurement. In another novel aspect, the CSI-RS measurement is conditionally configured. In yet another novel aspect, the UE decodes the time index of the SS block conditionally.

Abstract: Apparatus and methods are provided for RRM measurement in the NR network. In one novel aspect, the RRM measurement is configured with one measurement gap for SS block and CSI-RS. In one embodiment, an extended MGL (eMGL) is configured such that the SS block and CSI-RS is measurement within one measurement gap. In another embodiment, the shorter MGL (sMGL) that is shorter than the standard MGL is configured. In another novel aspect, the CSI-RS is allocated adjacent to the SS blocks such that one measurement gap is configured for both the SS block and CSI-RS measurement. In another novel aspect, the CSI-RS measurement is conditionally configured. In yet another novel aspect, the UE decodes the time index of the SS block conditionally.

Abstract: Aspects of the disclosure provide an electronic device. The electronic device can include transceiver circuitry and processing circuitry. The transceiver circuitry can be configured to receive signals from wireless service provider networks. The processing circuitry can be configured to detect, from the signals, a high speed rail (HSR) signature of one of the wireless service provider networks. The HSR signature can indicate that the one of the wireless service provider networks is a first network for a high speed rail usage. The processing circuitry can also be configured to determine a mobility of the electronic device based on the signals in a time duration. Further, the processing circuitry can be configured to selectively camp on a first cell of the first network based on the mobility of the electronic device.

Abstract: Various solutions for data transmission over multiple uplink carrier with respect to user equipment (UE) in mobile communications are described. A UE may establish a connection over a downlink component carrier and a first uplink component carrier with a network apparatus. The UE may further establish a connection over a second uplink component carrier with the network apparatus. The UE may transmit uplink data to the network apparatus via at least one of the first uplink component carrier and the second uplink component carrier. The UE may also assign the first uplink component carrier as a primary carrier and assigning the second uplink component carrier as a supplementary carrier. The UE may further switch the primary carrier from the first uplink component carrier to the second uplink component carrier.

Abstract: Aspects of the disclosure provide an electronic device. The electronic device can include transceiver circuitry and processing circuitry. The transceiver circuitry can be configured to receive signals from wireless service provider networks. The processing circuitry can be configured to detect, from the signals, a high speed rail (HSR) signature of one of the wireless service provider networks. The HSR signature can indicate that the one of the wireless service provider networks is a first network for a high speed rail usage. The processing circuitry can also be configured to determine a mobility of the electronic device based on the signals in a time duration. Further, the processing circuitry can be configured to selectively camp on a first cell of the first network based on the mobility of the electronic device.

Abstract: A User Equipment (UE) including a wireless transceiver and a controller is provided. The wireless transceiver performs wireless transmission and reception to and from a service network. The controller receives a measurement configuration and a Discontinuous Reception (DRX) configuration from the service network via the wireless transceiver, extends a measurement period indicated by the measurement configuration, and performs a cell measurement via the wireless transceiver in the extended measurement period.

Abstract: A method can include receiving measurement configurations for measuring serving/neighboring cells at a user equipment (UE) in a wireless communication system. The measurement configurations can indicate multiple measurement objects (MOs) each with a SSB measurement timing configuration (SMTC) specifying a sequence of SMTC window durations (i.e. SMTC occasions), and a sequence of gap occasions. The MOs can be measured within the SMTC occasions that overlap the gap occasions. The method can further include determining a carrier-specific scaling factor for a target MO in the multiple MOs based on candidate MOs to be measured in each of the gap occasions.

Abstract: A method to speed up uplink data access during a radio resource control (RRC) reconfiguration procedure is proposed. UE first sends an RRC request, and in response receives an RRC reconfiguration message from BS. UE then decodes the RRC reconfiguration message and performs reconfiguration. UE also waits for UL grant for transmitting RRC reconfiguration complete with UL data if available. In one embodiment, BS provides the UL grant in a common search space while UE is performing the reconfiguration, and UE does not need to wait the UL grant until after the reconfiguration is done. In other words, the reconfiguration and the UL grant occurs in parallel, which reduces access delay for UL data. In an alternative embodiment, BS provides UL grant in RRC reconfiguration message, so that UE does not have to receive UL grant while performing the reconfiguration.

Abstract: A User Equipment (UE) including a wireless transceiver and a controller is provided. The wireless transceiver performs wireless transmission and reception to and from a cell. The controller receives first barring information and second barring information from the cell via the wireless transceiver, and ignores the first barring information in response to the UE supporting network-based Cell-specific Reference Signal (CRS) interference mitigation. Also, the controller allows the UE to access the cell in response to the UE supporting network-based CRS interference mitigation and the second barring information indicating that the cell is not barred.

Abstract: Various examples and schemes pertaining to uplink data compression (UDC) in mobile communications are described. A processor of an apparatus receives a Packet Data Convergence Protocol (PDCP) Session Data Unit (SDU) and performs uplink data compression (UDC) to compress a data portion of the PDCP SDU to generate a UDC packet. The processor also generates a message authentication code with integrity (MAC-I). The processor also ciphers at least a data portion of the UDC packet to provide a ciphered UDC packet. In case the PDCP SDU contains a Service Data Application Protocol (SDAP) header, the processor extracts the SDAP header from the PDCP SDU prior to performing the UDC, and the processor prepends the SDAP header to the ciphered UDC packet. The processor further constructs a PDCP Protocol Data Unit (PDU) by prepending a PDCP header to either the SDAP header or the ciphered UDC packet.

Abstract: A method of supporting group communication over LTE MBMS is provided. A UE first establishes a unicast bearer in a network for group communication. The UE belongs to a communication group having a communication group ID. The UE receives access information from the network for monitoring downlink (DL) multicast traffic of the DL group communication based on a multicast decision. The UE is then ready for monitoring a multicast Multimedia Broadcast Multicast Service (MBMS) bearer for receiving the DL multicast traffic. In one embodiment, The UE requests to switch the DL multicast traffic from the multicast MBMS bearer to the unicast bearer upon detecting that the UE is approaching an MBMS coverage boundary. In another embodiment, the UE transmits an indication of preferred target cells to the network before performing a handover and thereby maintaining multicast service continuity of the group communication.

Abstract: A method of MDT information logging and problem event reporting is provided. The method supports provisioning of reference events to enable correlation of system time and the problem occurrence. In one embodiment, a problem event report includes time information directly or indirectly related to a reference event. A method of handling battery condition is also provided. The method supports autonomously suspending or resuming OAM activities in MDT based on predefined battery condition. In one embodiment, a testable battery condition handling is designed for MDT logging.

Abstract: A method of MDT information logging and problem event reporting is provided. The method supports provisioning of reference events to enable correlation of system time and the problem occurrence. In one embodiment, a problem event report includes time information directly or indirectly related to a reference event. A method of handling battery condition is also provided. The method supports autonomously suspending or resuming OAM activities in MDT based on predefined battery condition. In one embodiment, a testable battery condition handling is designed for MDT logging.

Abstract: A method to speed up uplink data access during a radio resource control (RRC) reconfiguration procedure is proposed. UE first sends an RRC request, and in response receives an RRC reconfiguration message from BS. UE then decodes the RRC reconfiguration message and performs reconfiguration. UE also waits for UL grant for transmitting RRC reconfiguration complete with UL data if available. In one embodiment, BS provides the UL grant in a common search space while UE is performing the reconfiguration, and UE does not need to wait the UL grant until after the reconfiguration is done. In other words, the reconfiguration and the UL grant occurs in parallel, which reduces access delay for UL data. In an alternative embodiment, BS provides UL grant in RRC reconfiguration message, so that UE does not have to receive UL grant while performing the reconfiguration.

Abstract: A User Equipment (UE) including a wireless transceiver and a controller is provided. The wireless transceiver performs wireless transmission and reception to and from a cell. The controller receives first barring information and second barring information from the cell via the wireless transceiver, and ignores the first barring information in response to the UE supporting network-based Cell-specific Reference Signal (CRS) interference mitigation. Also, the controller allows the UE to access the cell in response to the UE supporting network-based CRS interference mitigation and the second barring information indicating that the cell is not barred.

Abstract: A method can include receiving measurement configurations for measuring serving/neighboring cells at a user equipment (UE) in a wireless communication system. The measurement configurations can indicate multiple measurement objects (MOs) each with a SSB measurement timing configuration (SMTC) specifying a sequence of SMTC window durations (i.e. SMTC occasions), and a sequence of gap occasions. The MOs can be measured within the SMTC occasions that overlap the gap occasions. The method can further include determining a carrier-specific scaling factor for a target MO in the multiple MOs based on candidate MOs to be measured in each of the gap occasions.

Abstract: A first network node receives downlink signaling from a second network node in a first occasion, received on a first carrier in a first time slot, and a second occasion, which is received either on the first carrier in a second time slot after the first time slot or on a second carrier in the first time slot or the second time slot. A MAC control element (CE) in the downlink signaling received in the first and second occasions contain a first timing padding value and a second timing padding value, respectively. A predetermined time slot is equally indicated by the first time slot plus the first timing padding value as well as by the second time slot plus the second timing padding value. The first network node effects one or more configurations in the predetermined time slot responsive to receiving the downlink signaling in the first and second occasions.

Abstract: Methods and apparatus are provided for control overhead reduction. The UE configures one or more short transmission time interval regions over a normal TTI region shared by the UE and one or more other, each UE includes a self-contained control information sPDCCH occupying a control information region. The UE detects a cover signal, which indicates one or more resource elements in the sPDCCH control-information region that can be used for data transmission. The UE obtains data transmission from the REs in the SPDCCH control information region based on the detected cover signal. In one embodiment, the cover signal is a dedicated signal. In another embodiment, the cover signal is a common signal. In yet another embodiment, the cover signal is encoded in a downlink control information (DCI) intended for the UE. In one embodiment, the cover signal indicates one or more CCE REs to be excluded for data transmission.

Abstract: Methods and apparatus are provided for transmission preemption and its indication. In one novel aspect, the UE receives a downlink resource assignment and determines whether an ultra-low latency (ULL) alert signal exists, wherein the ULL alert signal indicates a set of soft bits are overridden. The UE discards the set of soft bits from the overridden resources upon determining the ULL alert signal exists. In one embodiment, the ULL alert signal resides in the assignment subframe, and the overridden soft bits are in the assignment subframe. The alert timing for the ULL alert signal is preconfigured. In another embodiment, the ULL alert signal resides in a subframe that is right after the assignment subframe. The alert signal is enabled through an enabling of an enhanced mobile broadband and ULL service. The alter signal indicates a superset of the overridden soft bits or part of the overridden soft bits.